An investment of around £1M has just been completed at Berryman's glass treatment plant in Knottingley, W Yorks. It has created the UK's largest colour enhancement facility to further improve the quality of recycled glass delivered to the company's long term partner Rockware Glass. Multiple colour detection machines have been installed and are now successfully operating to deliver 99.5% pure colour on clear recycled glass. This equipment allows the plant's full 200,000 tonne capacity to be colour enhanced, an important breakthrough in allowing Rockware to use higher levels of cullet. Each colour detection machine uses two continuous scanning, high-resolution digital cameras to find out of colour glass fragments. For example, within the clear glass stream the cameras will identify brown and green glass.